CVE-2022-43086 in Restaurant POS System
Summary
by MITRE • 11/01/2022
Restaurant POS System v1.0 was discovered to contain a SQL injection vulnerability via update_customer.php.
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Analysis
by VulDB Data Team • 11/30/2022
The vulnerability identified as CVE-2022-43086 represents a critical security flaw in Restaurant POS System version 1.0 that exposes the application to unauthorized data access and manipulation. This issue stems from inadequate input validation within the update_customer.php script, which processes customer information updates within the point-of-sale environment. The vulnerability creates an exploitable pathway for malicious actors to inject arbitrary SQL commands into the database query execution process, potentially compromising the entire customer data repository.
This SQL injection vulnerability falls under the Common Weakness Enumeration category CWE-89, which specifically addresses improper neutralization of special elements used in SQL commands. The flaw exists because the application fails to properly sanitize user-supplied input parameters before incorporating them into database queries. When an attacker submits malicious SQL payloads through the customer update interface, the system processes these inputs directly without adequate filtering or parameterization, allowing the attacker to manipulate the underlying database structure and execute unauthorized operations.
The operational impact of this vulnerability extends beyond simple data theft, as it enables attackers to perform a wide range of malicious activities within the compromised system. An attacker could extract sensitive customer information including personal identification details, payment card data, and transaction histories, potentially leading to identity theft and financial fraud. The vulnerability also allows for data modification operations, enabling attackers to alter customer records, manipulate transaction amounts, or even delete critical customer information. Additionally, the attacker could escalate privileges within the database to gain administrative access, potentially compromising the entire point-of-sale infrastructure.
The attack vector for this vulnerability is particularly concerning given the nature of point-of-sale systems, which typically handle sensitive financial transactions and personal customer data. The exploitation requires minimal technical expertise and can be accomplished through standard web application penetration testing tools. The vulnerability affects the update_customer.php endpoint, which is likely accessed through the standard customer management interface of the restaurant POS system. Security practitioners should note that this vulnerability is particularly dangerous in retail environments where customer privacy and financial data protection are paramount. Organizations should immediately implement input validation measures, employ parameterized queries, and conduct comprehensive security assessments of their POS systems to prevent exploitation.
Mitigation strategies should include immediate implementation of proper input sanitization and parameterized query execution throughout the application codebase. The system administrators should deploy web application firewalls to detect and block suspicious SQL injection attempts, while also implementing regular security patching procedures. Additionally, organizations should conduct thorough code reviews to identify similar vulnerabilities in other application components and establish robust database access controls. The implementation of principle of least privilege access controls for database users and regular security monitoring of database activities can further reduce the impact of potential exploitation attempts. According to the ATT&CK framework, this vulnerability maps to the technique T1071.004 for application layer protocol usage and T1046 for network service scanning, highlighting the need for comprehensive network monitoring and application security controls.